Chaeles a



' (No Model.)

0. A. THOMPSON.

EXHAUST NOZZLE. Patented June 16,1885.

ill

alllllIIlll IIIIIIIIIIIHI I! :r. Lin.

1 lm lllllllllllllllllllll l I l I H" lllllll lu-Lilhognphlr. Wnhingkm. B. Q

NITED STATES PAT NT OFFICE.

CHARLES A. THOMPSON, OF FLUSHING, NEW YORK.

EXHAUST-NOZZLE.

SPECIFICATION forming part of Letters Patent No. 320,016, dated June 16, 1885.

' Application filed March 24,1885. (No model.)

To all whom it may concern.-

Be it known that I, CHARLES A. THOMP- SON, of Flushing, county of Queens,and State of New York, have invented certain new and useful Improvements in Exhaust-Nozzles, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

My invention has relation to nozzles of the character employed in connectionwith exhauststeam pipes in locomotives, and in other situations, and ordinarily known as exhaustnozzles. These are usually located in the smoke-arch, and control and direct the escape of exhaust-steam in such manner as to influence the draft of air through the fire-box, as

, sparks from the smoke-stacl ,as well as against the collection of cinders,&c.,within the smokearch. To accomplish all of this my improvements involve certain novel and useful arrangements or combinations of parts and principles of operation, all of which will be herein first fully described, and then pointed out in the claims.

In the accompanying drawings, forming part of this specification,Figure 1 is a side elevation of a double nozzle constructed and arranged for operation in accordance with my invention and involving the principles thereof. Fig. 2 is an elevation of the same upon a plane at right angles to that of Fig. 1. Fig. 3 is a central vertical section of the same,showing a vertically-moving damper or slide in position to close the ports leading from one channel to the other; and Fig. 4 is a similar view, showing the slide in position to open the said ports. Fig. 5 is a top or plan view of device shown in Fig. 1. Fig. 6 isahorizontal sectional view, showing the ports opening from each steamchannel into a third channel, instead ofinto each other, as in previous figures. Fig. 7 represents a face and edge view of the damper or slide detached or removed from its seat.

In all these figures like letters of reference, wherever they occur, indicate corresponding parts.

A is the base part of the nozzle, which nozzle is shown in Figs. 1 to 6 as composed of two separate parts having through each a steam channel or way, (represented at B and 0,) for receiving and discharging the exhaust-steam from an engine. This nozzle is seatedin any substantial manner in the desired location. When made in two parts,the flanges a a serve to receive suitable screws or rivets for securing the parts together.

D D are auxiliary ports or openings leading from the steam-channels below the upper outlets. These in Figs. 1 to 5 are located opposite each other, so that when open steam will pass from one channel to the other.

E is a perforated slide, damper, or regulator, having openings D to correspond with those in the shells, and seated so that by moving it up or down the ports may be closed or opened, or regulated in size, as will be readily understood from Figs. 3 and 4. The slide or damper is to be moved by any suitable device connected therewith and within convenient reach of the engineer.

The perforation b indicates a point of at tachment,which may be utilized for connecting the moving device with the regulator.

In Fig. 6, the auxiliary ports D, instead of forming a continuous passage from one steamchannel to the other, communicate with a third channel, as F, and slides or dampers E E are employed to control the ports, operating upon same principles as in previous figures.

When the engine is running with full steam, and slowly, (as in the case of a locomotive going up grade with a heavy load,) the exhaust enters each channel alternately, and as the pulsations areviolent it is apparent that the steam, (if the regulator be closed,) in issuing from the contracted upper openings, proceeds in short violent blasts, producing an intermittent effect upon the induced draft of air; but if the damper or regulator be opened an in creased area of escape-opening is affordedthat is, the blast in one channel will force steam into the other through the ports D- thus relieving first one channel and then the other, and producing a steady and uniform discharge of steam and similar consequent airdraft, whereby the fire is uniformly maintained. The more rapid the consumption and escape of steam,thc better the draft and the better the fire. By thus subdning the escape of steam it is apparent that it will more completely fill the smoke-arch and smoke'st-ack, thus operating to better advantage upon all the sparks from the fire-box and preventing any being blown out with the violence of one blast before operated upon by the next, as would otherwise occur. So,also,if the engine be running rapidly with steam cut off, according to the work required, the auxiliary ports afford the additional outlet-area to insure uniform final discharge with resulting benefits, and in either of these or intermediate working conditions of the.engine,if it be desired to increase the draft, the ports have only to be closed to the required degree by moving the regulator. By snbduing the velocity of the escaping steam the noise produced thereby is mufiled,rendering the use of the nozzle unobjeetionable on account of any loud noise. In case an independent channel, as F, be employed, like results and benefits are produced.

In all the forms it will be observed that a fixed general outlet is provided, the relief to the steam-channel being afforded by openings below this general outlet and independent thereof. This affords always an outlet which may be relieved by bringing the auxiliary ports into use, but which cannot be contracted.

The sliding perforated damper is easy to make, to locate, and to adjust as required, and is not liable to become clogged or to get out of order; and the nozzle itself is of simple construction and capable of being cheaply made.

When constructed and arranged for operation, substantially in accordance with the foregoing explanations, the improved device has been found in practice well adapted for the uses and purposes set forth.

Having now fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In an exhaust-nozzle of the character herein set forth, the two steam channels or ways,each open at bottom and receiving steam therethrough in the manner set forth, said channels having relief-ports located below and independent of the upper outlet, which ports serve to establish communication between the two steam-channels and permit the excess of steam in either channel to enter the other channel, substantially as and for the purposes set fort-11'.

2. In an exhaust-nozzle of the character herein set forth, a steam channel or way having relief-ports located below and independent of the upper outlet, and the vertically-moving perforated damper or regulator for controlling the size of the relief-ports, combined with the wall of the steanrchannel, substantially as and for the purposes set forth.

3. The herein-described eXhaust-nozzle,composed of two parts secured one to the other, the channel in each part being provided with relief-ports, and the vertically-moving perforatedhegulators for governing said ports, arranged for operation substantially as and for the purposes set forth.

In testimony that I claim the foregoing I have hereunto set my hand in the presence of two witnesses.

CHARLES A. THOMPSON.

\Vitnesses:

J o IN BUOKLER, WORTH OSGOOD. 

